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No-motor type electric angle vibrative table

An angular vibrating table, electrodynamic technology, applied in measuring devices, instruments, speed/acceleration/shock measurement, etc., can solve problems such as high technical complexity and deterioration of angular vibration waveforms

Inactive Publication Date: 2008-07-23
BEIJING CHANGCHENG METERING TEST TECH INST NO 1 GRP CO CHINA AVIATION IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the influence of the time constant of the motor, this kind of angular vibration table is not suitable for the generation of higher frequency angular vibration. The general operating frequency range is below 100Hz, and due to the complex motor magnetic field, even if a brushless DC torque motor is used, the angular vibration The waveform has adverse effects. If a brushed DC torque motor is used, coupled with the influence of the friction of the motor itself, the angular vibration waveform will be further deteriorated.
In this kind of angular vibration table structure, the method of controlling the angular position or angular velocity is generally used to ensure the equilibrium position of the angular vibration, and the technical complexity is high.

Method used

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  • No-motor type electric angle vibrative table
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  • No-motor type electric angle vibrative table

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Embodiment Construction

[0008] The angular vibrating table is composed of three major parts: the excitation system (excitation coil + magnetic shell), the drive system (moving coil frame + drive coil + worktable), and the support and guide system (including the recovery spring). Constitute a spring inertia system. The base 1, magnetic core 2, outer wall 3 and yoke 5 of the excitation system are made of pure electrical iron, forming the magnetic shell of the angular vibrating table. The excitation coil 4 is placed on the periphery of the magnetic core 2, and the positioning ring 12 is positioned on the base below. 1, the moving coil 6, the main shaft 9 and the table 10 form a drive shaft skeleton 13, the moving coil 6 is installed above the magnetic core 2, and there is a gap between the magnetic core 2, and the magnetic yoke 5 is located above the outer wall 3, There is a gap between the moving coil 6 and the two gaps are about 1mm. The conductive rod 11 is installed in the yoke, and the moving coil ...

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Abstract

Non-electrical motor type electrodynamic angular vibration table is in use for angular motion sensor to carry out dynamic test and calibration. Excitation system of the table is produced from electric pure iron. Moving coil, main axis, and table form framework of driving shaft. Wire slots are distributed on the framework. After being inserted to wire slots, drive lead wires are dipped in lacquer in high pressure and solidified in temperature box. Exserted wires from slots are welded to flexible cords. Main axis is in structure of hollow drum, two ends of which are connected to the moving coil and the table. Being sheathed outside the main axis, rubber drum is bonded to the moving coil and the table by using glue. The moving coil is placed between magnetic core and magnetic yoke. The invention possesses no interference from motor, and high electrical response speed. Operation frequency is higher than 1000Hz, and wave distortion of angular acceleration is less than 3%.

Description

Technical field: [0001] The invention relates to a non-motor electric angular vibrating table used for dynamic performance testing and calibration of an angular motion sensor. Background technique: [0002] At present, the structure of the angular vibrating table adopts the DC torque motor 17 as the driving part, the main shaft 9 and the table 10 as the moving parts, and the precision bearing 16 as the supporting structure of the moving parts. When the DC torque motor 17 has an alternating current, the motor generates The alternating moment acts on the moving parts, causing the moving parts to generate angular vibration. In order to ensure that the center of rotation of the angular vibration does not deviate, precision bearings 16 are required to constrain the moving parts axially and radially. Due to the influence of the time constant of the motor, this kind of angular vibration table is not suitable for the generation of higher frequency angular vibration. The general oper...

Claims

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Application Information

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IPC IPC(8): G01D18/00G01P21/00
Inventor 薛景峰邵新慧彭军
Owner BEIJING CHANGCHENG METERING TEST TECH INST NO 1 GRP CO CHINA AVIATION IND